From one-wheeled skateboards to scooters that charge your smartphone, there are plenty of personal transportation devices at CES if you're tired of walking the immense show floor. Join CNET as we take them for a ride.

This week on Crave, we entertain a captive audience of smartphone-loving frogs, teach a robot octopus to swim, and charge a dead cell phone with a skateboard. Plus, Harvard is looking for new innovations in soft robotics and director Steven Soderbergh re-envisions "Raiders of the Lost Ark," sans color.